Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1985 Porsche 944 AutomaticFACTORY OEM SERVICE PROCEDURE
Checking Coasting Fuel Shutoff
- With engine at speed, bridge disconnected plug of idle switch with a jumper wire. Accelerate engine to approximately 1300 RPM. Engine should begin to surge (this is coasting fuel shutoff).
- If engine does not surge, check wire between idle switch plug and control unit plug for breaks according to wiring diagram. If necessary, replace control unit.
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.